Surface Microroughness Observed during Wet Etching of Silicon Dioxide with High Electric Field Stress

Surface microroughness during stepwise wet etching of silicon dioxide with high electric field stress was observed by atomic force microscopy (AFM). It was found that the rms (root mean square) value of the above oxide surface increased with increasing electric field stress. This indicates that the...

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Veröffentlicht in:Japanese Journal of Applied Physics 1999-12, Vol.38 (12A), p.L1453
Hauptverfasser: Yamabe, Kikuo, Kai, Liao, Murata, Masahide
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Kai, Liao
Murata, Masahide
description Surface microroughness during stepwise wet etching of silicon dioxide with high electric field stress was observed by atomic force microscopy (AFM). It was found that the rms (root mean square) value of the above oxide surface increased with increasing electric field stress. This indicates that the internal damage in silicon dioxide caused by the high electric field stress is distributed two-dimensionally and the degradation does not progress uniformly. The depth profile of the rms value was also obtained during stepwise etching of the silicon dioxide, which may reflect the depth profile of the internal damage in the silicon dioxide caused by the high electric field stress.
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title Surface Microroughness Observed during Wet Etching of Silicon Dioxide with High Electric Field Stress
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